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Protein A - esonn

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Molecular machines<br />

⇒ Linear motors<br />

⇒ Rotational motors<br />

⇒ Energy conversion<br />

⇒ <strong>Protein</strong> factories<br />

⇒ Transport systems<br />

⇒ Channels<br />

closed ⇔ open<br />

Kuo, Structure 13 (2005) 1463<br />

Voltage-gated potassium channels<br />

Permeability:<br />

10 6 ions/s<br />

Selectivity:<br />

only potassium<br />

Conversion:<br />

potential => current<br />

42

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